Looking for logging into the Joomla Captcha Form Plugin site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Joomla Captcha Form Plugin site. After that you can login as usual with your login credentials.
https://forum.joomla.org/viewtopic.php?t=943059
https://github.com/joomla/joomla-cms/issues/19749
https://www.joomlabeginner.com/blog/tutorials/49-how-to-add-recaptcha-in-joomla-registration-form
https://www.gavick.com/forums/cloudhost-joomla3/no-captcha-field-in-login-forms-35664
https://www.joomlashack.com/blog/joomla/new-recaptcha-joomla/
https://hostadvice.com/how-to/how-to-use-recaptcha-in-joomla/
https://www.joomshaper.com/blog/google-recaptcha-joomla-contact-forms-integration
https://joomlakave.com/blog/12-best-captcha-extensions-for-joomla-free-and-paid
https://stackoverflow.com/questions/10713949/captcha-for-joomla-administrator-login-panel
https://www.themexpert.com/blog/how-to-add-recaptcha-support-in-joomla-extension
https://www.a2hosting.com/kb/installable-applications/optimization-and-configuration/joomla2/adding-captcha-protection-to-a-joomla-site
http://www.itdoor.lu/liste-fachartikel-zum-thema-joomla-von-itdoor/joomla-user-im-backend-anlegen/joomla-registrierung-ueber-frontend-einstellungsmoeglichkeiten/captcha-in-joomla-bzw-recaptcha-in-joomla/
https://pcmshaper.com/post/how-to-setup-google-recaptcha-in-joomla-3-9/15